ABSTRACT
This chapter details the application of flow modelling to rainwater drainage systems, both conventional and siphonic. It starts with a brief overview of the operation of rainwater drainage systems, before going on to outline possible approaches to the simulation of conditions within such systems. Throughout, the underlying principles are illustrated through application of some of the many numerical models that have been developed over the past 20 years at Heriot-Watt University (FM4GUTT, SIPHONET, ROOFNET).
